In July, Bethesda typically sees daytime highs of 30.8°C and overnight lows around 18.3°C. Compared to the annual average high of 19.0°C, July runs +11.8°C.
July in Bethesda averages a daytime high of 30.8°C and an overnight low of 18.3°C.
July runs +11.8°C compared to Bethesda's annual average high of 19.0°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 30.8°C and cooler evenings around 18.3°C.